Sri Lanka Multi-Client Programme
The FTG gravity gradiometry and magnetic data information delivered by this programme from Bell Geospace will provide critical information for the upcoming Sri Lanka bidding rounds
Bell Geospace has been awarded exclusive rights to acquire and provide industry defining multi-client Gravity Gradiometry data for Sri Lanka by the Petroleum Resources Development Secretariat of Sri Lanka (PRDS). The Sri Lanka FTG Multi-Client Programme includes airborne 3D Full Tensor Gradiometry, gravity and magnetic survey data that will be undertaken over the offshore Mannar and Cauvery basins, and extended over the South basin.
With our expertise, advanced data processing and reliable interpretations, the Sri Lanka FTG Multi-Client Programme enables operators to minimise risk while optimising their exploration budget. This acquisition comes in a timely manner, supporting the upcoming bidding rounds. FTG data will allow operators to revisit existing seismic and efficiently design new acquisitions.
Data will be acquired on a 2km x 8km line plan or 1km x 5km, and will be delivered with the full complement of measured tensor components. The primary objective of the survey is to determine the depth to basement, geological trends, and the potential for identification of target structures hosting hydrocarbons.
This will result in over 100,000 line km’s of fully processed and interpreted FTG data, which will be integrated with additional datasets such as existing 2D seismic data. Acquisition is expected to start in the Q3 of 2020. We recommend pre-commitment to secure priority acquisition.
Why undertake a FTG survey in Sri Lanka?
The offshore basins currently lack detailed geological maps showing structures and sub-basins within the area. With the exception of seismic in some areas, no airborne or regional geophysical data related to oil and gas exploration is available. Furthermore, most of the seismic data has been acquired pre-2000, making efficient target delineation challenging. The shallow waters of the Mannar and Cauvery basins make high resolution Air-FTG® the most suitable tool for early stage exploration. In the South basin, where there is no seismic coverage, the combination of high-resolution FTG over the transtion zone and gravity in deeper water will provide a unique imaging solution to drive exploration.
FTG data would provide direct indications of:
- Closed structures
- Location of high-density material
- Lithological changes
- Geological contact zones
- Faults including regional and secondary faults
Analysing Air-FTG® and magnetic data will enhance geological mapping which in turn will change current geological ideas. This will shed light on many unexplored areas within the Mannar and Cauvery basins in a cost effective way, and limit exposure to risk. It will also bring insights into existing seismic data interpretation and optimise the design of new seismic acquisitions.